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UC2833

更新时间: 2024-02-11 19:55:12
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
8页 735K
描述
Precision Low Dropout Linear Controllers

UC2833 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:QLCC包装说明:PLASTIC, LCC-20
针数:20Reach Compliance Code:not_compliant
HTS代码:8542.39.00.01风险等级:5.66
Is Samacsys:N模拟集成电路 - 其他类型:ANALOG CIRCUIT
JESD-30 代码:S-PQCC-J20长度:8.965 mm
功能数量:1端子数量:20
封装主体材料:PLASTIC/EPOXY封装代码:QCCJ
封装形状:SQUARE封装形式:CHIP CARRIER
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:4.57 mm表面贴装:YES
端子形式:J BEND端子节距:1.27 mm
端子位置:QUAD处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:8.965 mmBase Number Matches:1

UC2833 数据手册

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UC1832/3  
UC2832/3  
UC3832/3  
Precision Low Dropout Linear Controllers  
FEATURES  
DESCRIPTION  
Precision 1% Reference  
The UC1832 and UC1833 series of precision linear regulators include all the  
control functions required in the design of very low dropout linear regulators.  
Additionally, they feature an innovative duty-ratio current limiting technique  
which provides peak load capability while limiting the average power dissipa-  
tion of the external pass transistor during fault conditions. When the load cur-  
rent reaches an accurately programmed threshold, a gated-astable timer is  
enabled, which switches the regulator’s pass device off and on at an externally  
programmable duty-ratio. During the on-time of the pass element, the output  
current is limited to a value slightly higher than the trip threshold of the duty-ra-  
tio timer. The constant-current-limit is programmable on the UCx832 to allow  
higher peak current during the on-time of the pass device. With duty-ratio con-  
trol, high initial load demands and short circuit protection may both be accom-  
modated without extra heat sinking or foldback current limiting. Additionally, if  
the timer pin is grounded, the duty-ratio timer is disabled, and the IC operates  
in constant-voltage/constant-current regulating mode.  
Over-Current Sense Threshold  
Accurate to 5%  
Programmable Duty-Ratio  
Over-Current Protection  
4.5V to 36V Operation  
100mA Output Drive, Source or  
Sink  
Under-Voltage Lockout  
Additional Features of the UC1832  
series:  
Adjustable Current Limit to  
Current Sense Ratio  
These IC’s include a 2 Volt (±1%) reference, error amplifier, UVLO, and a high  
current driver that has both source and sink outputs, allowing the use of either  
NPN or PNP external pass transistors. Safe operation is assured by the inclu-  
sion of under-voltage lockout (UVLO) and thermal shutdown.  
Separate +VIN terminal  
Programmable Driver Current  
Limit  
The UC1833 family includes the basic functions of this design in a low-cost, 8-  
pin mini-dip package, while the UC1832 series provides added versatility with  
the availability of 14 pins. Packaging options include plastic (N suffix), or ce-  
ramic (J suffix). Specified operating temperature ranges are: commercial (0°C  
to 70°C), order UC3832/3 (N or J); industrial (–25°C to 85°C), order UC2832/3  
(N or J); and military (–55°C to 125°C), order UC1832/3J. Surface mount  
packaging is also available.  
Access to VREF and E/A(+)  
Logic-Level Disable Input  
BLOCK DIAGRAMS  
UDG-92040  
6/94  

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SPECIALTY ANALOG CIRCUIT, PQCC20, PLASTIC, LCC-20